/* =========================================================================
   Apex Construction — Site de démonstration (DigitalZen)
   Design system « Industrial Precision ». CSS écrit à la main, sans framework.
   ========================================================================= */

:root {
    /* Couleurs */
    --primary: #091426;
    --primary-container: #1e293b;
    --on-primary: #ffffff;
    --on-primary-container: #8590a6;
    --primary-fixed: #d8e3fb;
    --primary-fixed-dim: #bcc7de;

    --secondary: #9d4300;
    --secondary-container: #fd761a; /* orange action */
    --on-secondary: #ffffff;

    --tertiary-fixed-dim: #eec200;

    --surface: #f8f9ff;
    --surface-bright: #f8f9ff;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #eff4ff;
    --surface-container: #e5eeff;
    --surface-container-high: #dce9ff;
    --surface-variant: #d3e4fe;
    --surface-tint: #545f73;

    --on-surface: #0b1c30;
    --on-surface-variant: #45474c;
    --outline: #75777d;
    --outline-variant: #c5c6cd;

    /* Rayons */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Espacements (base 8px) */
    --xs: 4px;
    --sm: 12px;
    --md: 24px;
    --lg: 48px;
    --xl: 80px;
    --xxl: 120px;
    --gutter: 24px;
    --container-max: 1280px;

    /* Ombres structurelles (teintées primary) */
    --shadow-sm: 0 2px 6px rgba(9, 20, 38, 0.08);
    --shadow-md: 0 4px 12px rgba(9, 20, 38, 0.10);
    --shadow-lg: 0 8px 24px rgba(9, 20, 38, 0.16);
}

/* ----- Reset léger ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--surface);
    color: var(--on-surface);
    font-family: "Work Sans", system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

h1,
h2,
h3,
h4 {
    font-family: "Montserrat", system-ui, sans-serif;
    margin: 0;
    color: var(--primary);
}

p {
    margin: 0;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* ----- Typographie utilitaire ----- */
.display {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
}

.headline-lg {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}

.headline-md {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.3;
}

.body-lg {
    font-size: 18px;
    line-height: 1.6;
}

.label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.muted {
    color: var(--on-surface-variant);
}

@media (min-width: 768px) {
    .display {
        font-size: 48px;
        line-height: 1.1;
        letter-spacing: -0.02em;
    }
}

/* ----- Mise en page ----- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.section {
    padding-block: var(--xl);
}

@media (min-width: 1024px) {
    .section {
        padding-block: var(--xxl);
    }
}

.section-head {
    text-align: center;
    max-width: 640px;
    margin-inline: auto;
    margin-bottom: var(--xl);
}

.section-head h2 {
    margin-bottom: var(--sm);
}

/* ----- Boutons ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: "Work Sans", sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 12px 24px;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, opacity 0.2s;
    line-height: 1;
}

.btn-primary {
    background: var(--secondary-container);
    color: var(--on-secondary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--secondary);
}

.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--on-primary);
}

.btn-outline-light {
    background: transparent;
    border-color: var(--outline-variant);
    color: var(--on-primary);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
    padding: 16px 48px;
}

/* ----- En-tête / navigation ----- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--surface);
    border-bottom: 1px solid var(--outline-variant);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.brand {
    font-family: "Montserrat", sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: none;
    align-items: center;
    gap: var(--lg);
}

.nav-links a {
    color: var(--on-surface-variant);
    font-weight: 600;
    transition: color 0.2s;
    padding-bottom: 2px;
}

.nav-links a:hover {
    color: var(--secondary-container);
}

.nav-links a.active {
    color: var(--secondary);
    font-weight: 700;
    border-bottom: 2px solid var(--secondary);
}

.nav-cta {
    display: none;
}

.nav-toggle {
    display: inline-flex;
    background: none;
    border: 0;
    color: var(--primary);
    cursor: pointer;
    padding: 8px;
}

.icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.icon-lg {
    width: 36px;
    height: 36px;
}

/* Menu mobile (déployé via checkbox/JS) */
.mobile-menu {
    display: none;
    flex-direction: column;
    gap: var(--sm);
    padding: var(--md) 0;
    border-top: 1px solid var(--outline-variant);
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    color: var(--on-surface);
    font-weight: 600;
    padding: 8px 0;
}

@media (min-width: 768px) {
    .nav-links,
    .nav-cta {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

    .mobile-menu {
        display: none !important;
    }
}

/* ----- Hero ----- */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    color: var(--on-primary);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(9, 20, 38, 0.7);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
    padding-block: var(--xl);
}

.hero h1 {
    color: var(--on-primary);
    margin-bottom: var(--md);
}

.hero p {
    color: var(--primary-fixed);
    margin-bottom: var(--lg);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--md);
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
    }
}

@media (min-width: 768px) {
    .hero {
        min-height: 760px;
    }
}

/* ----- Grilles & cartes ----- */
.grid {
    display: grid;
    gap: var(--md);
}

.grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.card {
    background: var(--surface-bright);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    padding: var(--lg);
    transition: box-shadow 0.3s;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background: var(--surface-container-high);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--md);
}

.card h3 {
    margin-bottom: var(--sm);
}

/* ----- Détail des services (alternance image / texte) ----- */
.feature-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--lg);
    align-items: center;
    margin-bottom: var(--xl);
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature-media {
    height: 320px;
    border-radius: var(--radius);
    border: 1px solid var(--outline-variant);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.feature-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-title {
    display: flex;
    align-items: center;
    gap: var(--sm);
    color: var(--secondary-container);
    margin-bottom: var(--md);
}

.feature-title h2 {
    color: var(--primary);
    margin: 0;
}

.feature-body {
    display: flex;
    flex-direction: column;
    gap: var(--md);
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sm);
}

.chip {
    background: var(--surface-container-high);
    color: var(--on-surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 600;
}

@media (min-width: 1024px) {
    .feature-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--xl);
    }

    .feature-row.reverse .feature-media {
        order: 2;
    }
}

/* ----- Bannière CTA ----- */
.cta-banner {
    background: var(--primary);
    color: var(--on-primary);
    border-radius: var(--radius-lg);
    padding: var(--xl);
    display: flex;
    flex-direction: column;
    gap: var(--lg);
    align-items: flex-start;
    box-shadow: var(--shadow-lg);
    margin-top: var(--xl);
}

.cta-banner h3 {
    color: var(--on-primary);
    margin-bottom: var(--sm);
}

.cta-banner p {
    color: var(--primary-fixed-dim);
}

@media (min-width: 768px) {
    .cta-banner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .cta-banner .btn {
        flex-shrink: 0;
    }
}

/* ----- Galerie réalisations ----- */
.page-head {
    margin-bottom: var(--xl);
}

.page-head h1 {
    margin-bottom: var(--sm);
}

.page-head p {
    max-width: 760px;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sm);
    margin-bottom: var(--lg);
}

.filter-btn {
    font-family: "Work Sans", sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 8px 24px;
    border: 1px solid var(--outline);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--on-surface);
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.filter-btn:hover {
    background: var(--surface-variant);
}

.filter-btn.active {
    background: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sm);
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    cursor: pointer;
}

.project-card .media {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.project-card:hover img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(9, 20, 38, 0.8);
    opacity: 0;
    transition: opacity 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--md);
    color: var(--on-primary);
}

.project-card:hover .project-overlay,
.project-card:focus-within .project-overlay {
    opacity: 1;
}

.project-overlay span {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--tertiary-fixed-dim);
    margin-bottom: var(--xs);
}

.project-overlay h3 {
    color: var(--on-primary);
    margin-bottom: var(--xs);
}

@media (min-width: 640px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ----- Contact ----- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--lg);
}

.info-box {
    background: var(--surface-bright);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    padding: var(--md);
    display: flex;
    flex-direction: column;
    gap: var(--md);
}

.info-row {
    display: flex;
    align-items: flex-start;
    gap: var(--md);
}

.info-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    border-radius: var(--radius-full);
    background: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--on-surface-variant);
    margin-bottom: var(--xs);
}

.divider {
    height: 1px;
    background: var(--outline-variant);
}

.hours {
    background: var(--primary);
    color: var(--on-primary);
    border-radius: var(--radius);
    padding: var(--md);
}

.hours h3 {
    color: var(--on-primary);
    display: flex;
    align-items: center;
    gap: var(--sm);
    margin-bottom: var(--sm);
}

.hours h3 .icon {
    color: var(--secondary-container);
}

.hours li {
    display: flex;
    justify-content: space-between;
    padding-bottom: var(--xs);
    margin-bottom: var(--xs);
    border-bottom: 1px solid var(--primary-container);
    color: var(--primary-fixed-dim);
}

.hours li:last-child {
    border-bottom: 0;
}

.hours li b {
    color: #fff;
}

/* Formulaire */
.form-card {
    position: relative;
    background: var(--surface-container-lowest);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    padding: var(--lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.form-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--secondary-container);
}

.form-card h2 {
    margin-bottom: var(--lg);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--md);
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--md);
}

.field {
    display: flex;
    flex-direction: column;
}

.field label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--xs);
    color: var(--on-surface);
}

.field input,
.field select,
.field textarea {
    font-family: "Work Sans", sans-serif;
    font-size: 16px;
    color: var(--on-surface);
    background: var(--surface-bright);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    padding: 12px;
}

.field input,
.field select {
    height: 48px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-width: 2px;
    border-color: var(--secondary-container);
}

.form-note {
    margin-top: var(--sm);
    font-size: 14px;
    color: var(--on-surface-variant);
}

#form-success {
    display: none;
    margin-top: var(--md);
    padding: var(--md);
    background: var(--surface-container);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    color: var(--on-surface);
}

@media (min-width: 768px) {
    .form-row-2 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 5fr 7fr;
    }
}

/* Carte / zone d'intervention */
.map-wrap {
    position: relative;
    width: 100%;
    height: 384px;
    border-radius: var(--radius);
    border: 1px solid var(--outline-variant);
    overflow: hidden;
}

.map-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(1);
    opacity: 0.85;
}

.map-pin {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.map-pin .badge {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    padding: var(--md);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--outline-variant);
    text-align: center;
    color: var(--secondary);
}

.map-pin .badge p {
    color: var(--on-surface-variant);
}

.map-pin .badge .label {
    color: var(--primary);
}

/* ----- Pied de page ----- */
.site-footer {
    margin-top: auto;
    background: var(--primary);
    border-top: 1px solid var(--outline);
    color: var(--on-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--lg);
    padding-block: var(--xl);
}

.footer-brand {
    font-family: "Montserrat", sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--on-primary);
    margin-bottom: var(--sm);
}

.footer-grid h4 {
    color: var(--on-primary);
    font-size: 14px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--sm);
}

.footer-grid p,
.footer-grid a {
    color: var(--surface-variant);
}

.footer-links li {
    margin-bottom: var(--sm);
}

.footer-links a:hover {
    color: var(--tertiary-fixed-dim);
}

.footer-bottom {
    border-top: 1px solid var(--surface-tint);
    text-align: center;
    padding-block: var(--md);
    color: var(--surface-variant);
    font-size: 14px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* Utilitaires */
.mt-lg {
    margin-top: var(--lg);
}

.text-center {
    text-align: center;
}